package fr.uha.ensisa.kfetmanager.product;

import fr.uha.ensisa.kfetmanager.customer.Customer;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author JC
 */
public class GetProducts extends HttpServlet {

    @EJB
    private ProductManagerRemote productManager;
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        List<Product> list;

        try {
            list = productManager.getProducts();
        } catch (Exception e) {
            response.sendError(response.SC_INTERNAL_SERVER_ERROR, "Erreur lors de la recherche de produits");
            return;
        }

        Iterator<Product> it = list.iterator();

        response.setContentType("text/xml;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println("<products>");
            while (it.hasNext()) {
                Product p = it.next();

                out.println("<product>");
                out.println("<id>" + p.getId().toString() + "</id>");
                out.println("<name>" + p.getName() + "</name>");                
                out.println("<price>" + String.valueOf(p.getPrice()) + "</price>");
                out.println("<imgurl>" + p.getImageUrl() + "</imgurl>");
                out.println("</product>");
            }
            out.println("</products>");
        } finally { 
            out.close();
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
